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From:   Arnd Bergmann <arnd@arndb.de>
Date:   Tue, 31 Mar 2020 20:38:35 +0200
Message-ID: <CAK8P3a1jM8W72iH0qmMLRBRsv8ANYdL0xro0iWty3FvM6HTd0A@mail.gmail.com>
Subject: Re: [PATCH v2 09/11] powerpc/platforms: Move files from 4xx to 44x
To:     Christophe Leroy <christophe.leroy@c-s.fr>
Cc:     Michael Ellerman <mpe@ellerman.id.au>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Paul Mackerras <paulus@samba.org>,
        Michal Simek <michal.simek@xilinx.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
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On Tue, Mar 31, 2020 at 6:19 PM Christophe Leroy
<christophe.leroy@c-s.fr> wrote:
> Le 31/03/2020 à 18:04, Arnd Bergmann a écrit :
> > That has the risk of breaking user's defconfig files, but given the
> > small number of users, it may be nicer for consistency. In either
> > case, the two symbols should probably hang around as synonyms,
> > the question is just which one is user visible.
> >
>
> Not sure it is a good idea to keep two synonyms. In the past we made our
> best to remove synonyms (We had CONFIG_8xx and CONFIG_PPC_8xx being
> synonyms, we had CONFIG_6xx and CONFIG_BOOK3S_32 and
> CONFIG_PPC_STD_MMU_32 being synonyms).
> I think it is a lot cleaner when we can avoid synonyms.

Ok, fair enough.

> By the way I already dropped CONFIG_4xx in previous patch (8/11). It was
> not many 4xx changed to 44x. It would be a lot more in the other way
> round I'm afraid.

Right. Maybe stay with 44x for both then (as in your current patches), as it
means changing less in a part of the code that has few users anyway.

      Arnd